Question

What is chemical change and physical change?Explain.​

Answer 1

Answer:

chemical changeA process that causes a substance to change into a new substance with a new chemical formula.

physical changeA process that does not cause a substance to become a fundamentally different substance.

Answer 2

Answer:

Physical Change:

• Properties like size, shape, state (solid, liquid or gas), temperature, pressure etc., are physical properties. Those changes in which only physical properties of a substance changes are called physical changes. For example, lightening of bulb is a physical change.

Chemical Change:

• The change in which new substance is formed and chemical composition of a substance is changed is called a chemical change. A substance loses its identity in a chemical change and cannot be get back into its original form. For example, burning of candle, formation of curd etc.

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